what about electrum! Shouldn't it be:
$1 = 1 CP
$10 = 1 SP
$50 = 1 EP
$100 = 1 GP
$1000 = 1 PP
You lose all credibility for including Electrum. What a horrible currency.
what about electrum! Shouldn't it be:
$1 = 1 CP
$10 = 1 SP
$50 = 1 EP
$100 = 1 GP
$1000 = 1 PP
A chart for cost of pub items in this system would be helpful.
Then the exercise is a failure, because I would certainly not "easily accept" such prices. The modern economy is totally different from the medieval economy; mass production changes everything, on every level. And the typical D&D world does not have magic-driven factories pumping out goods, so you can't just swap in magic for technology.
This approach is no more convincing than just using prices out of the PHB,...
...and it's a lot more work.
I think you are missing the intent of this exercise. The intent is to creature a simple way to handle the economy that a DM can use intuitively. It is not really about being "realistic," it is about being simple and easy to use with enough flavor or realism that everyone can easily accept the prices you use.